COBHAM SAILOR SP3550 Portable UHF, User Manual, Page: 31 / 56

Configuring the radio
23
SUBC OFF SUBC disabled. Squelch opens on all received
signals.
1, 2, ..., 38 Sub-tone carrier ID.
Squelch opens if the received signal contains
the desired subtone. During transmission the
sub-tone with the corresponding ID is
generated.
Two radios on the same channel and with the
same sub-tone ID, can reduce unwanted
incoming traffic from other users on the same
channel.
CTCSS OFF CTCSS disabled.
ON Activate CTCSS on working channel. Two
radios on the same channel and with SUBC
enabled, can have a certain level of privacy.
Note that if you choose this option, the radio
immediately exits configuration mode and
starts CTCSS on the working channel.
GROUP SEL Selective Mode. Squelch opens only if the
programmed sub-tone is received in the
signal.
ANY Squelch opens on reception of any of the 38
sub-tones.
Name Values Description
0740